Stop or waste cock



1, 6. KING. STOP 0R WASTE COCK- APPLICAIION FILED SEPT.27, [920.

1,398,329. Patented Nov. 29, 1921.'

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raeaaeel To all whom it may concern: I

Be it known that :1, JOHN GRANVILL Kin a citizen of the United States, residing at Pine Bluff, in thecounty of Jeifersonand State of Arkansas, have invented certain new and useful lmprovements in Stopor .Naste Cocks, ofv which the following is a the valve casing andris rotatablethrough a quarter of a circle to permit the flow of liq uid through the casing orcut it off.

The general object of; my. invention isto improve upon valves of this character by the irovision-of a s rin ur in the ta ered l. e: i.

valve core downward against its seat, and

.the provision ofmeans wherebywhen the valve is fully turned over to its off or its on position, the valveis held positively to its seat.

A further object isto provide a construction of this character wherein the spring which urges the valve core to itsseat is inclosed within a "recess or shield through which the corepasses, this spring inclosing chamber or recessbeing closed by a cap fitting over the spring and working inside the shield, thus preventing the accumulation of dirt within the. spring chamber and further acting to eliminate all friction on the spring when the valve is operated. a

A further object/is to provide a valve of this'construction which has at draw and which is so constructedas to permit the core to move downward 9,," to compensate for wear in the main body .ofthe valve.

And a further object is to 'providemeans engaged with the valve core and adapted to engagewith the valve casing or body which, whenthe valve is turned fully off or fully on, will wedge the valve. downward against its seat, holding the valve rigidlyagainst knocks or jars when under pressure.

Other objects will appearin the course of f the following description.

My invention is illustrated in the accompanying drawings; wherein Figure 1 is a vertical sectional view through a stop cock constructed in accordspecification of Letters Patent. Patgnted l Application filed September 27, 1920." Serial No. 413,004. i

and cap.

be later stated. c

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ance with my invention showing the valve closed;v 1 3 Fig. 2 is a like viewto Fig.1 showingthe. valve open; r w

Figs. 3 and l. are sections on the lines 33 and 4.4 ofFigs. 1 and 2showing the valve closed and opened respectively.

Fig. 5 is a fragmentary elevation partly in section of the upper end of the valve and ap; a

Fig. 6'is a sectionalview of the upper end of the valve and cap showing the coacting lugsg. 'f

Fig. 7 is a fragmentary perspectiveview of the upper end of the core; and

Fig. 8 is a fragmentary perspective View of the lower end of the core and the washer Referring to these drawings, it will be seen that I have illustrated my invention as applied to a combined stop and waste cock, and in these drawings 10 designatesthe body or casing of the stop cock or waste coclror thebody or casing of the valve, which is formed to provide two alined'interlorly screw-threaded portions '11-, the tapering bore 121 intersectingthe valve body and the vertically elongated ports 13 leading from'thisbore into the alined portions 11. The bore at its lower end isenlarged, as at 14, to form a spring chamber, as will The valve core 15 is tapering. for the greater portion ofits length and is provided with the usual diametrically extending slot '16 adapted in one positionof the valve to register with the ports 13. Theupper end of the core of the valve proper is formed with a square head 17, the sides of which are lesslin width thanthe diameter of the core so as to leave shoulders 18 atthe junction of the squared portion 17 with the body of the valve core.

The lower end of the valve core below thetapering portion has a preferablyuniform diameter for a distance, as at 19, and below this has a reduced screw-threaded portion 20. The portion 19, which forms the stem of the core, extends down intothe chamber 14 and, of-course, is smaller-in diameter than the interior diameter of this chamber so that a washer 21 may be disposed at the innerend of the chamber a coiled compressionspring 22 disposed withinthe chamber and bearing against said washer,

and so thata cap 23 may be disposed over the screw-threaded portion' of the valve 7 stem and extendinto.thechamber and bear turethrough it, having a fiat side which fits A the flat side of the stem portion 19 so that the cap also rotates with the stem portion 19. This construction causes the washer, the

- spring and the cap to rotate together when V the lugs 28.

the stem rotates. When the valve is new, the nut 24: preferably abuts the lower end of the'casing and combines therewith to close the chamber and prevent the entrance of dirt and dust to the same.

The squared head 17 of the core is prefer ably hollow or formed with a socket 25 in which fits a handle 26 held in place by a set screw 27. I do not wish to be limited 'to this, however. The upper end of the valve body 10 above the portions 11 is formed with two diametrically opposite lugs 28. Each of these lugs on its opposite face is downwardly and inwardly beveled or inclined, as at 29. Fitting over the squared head 17 of the valve core and extending downward over these'upwardly projecting lugs 28 is a cap 30 having a square opening in its upperend which'fits the square: head 17 and having on its inside face the two diametrically disposed lugs 31 which, as

illustrated in Fig. 6, are also formed with inclined faces32 which are complementary to the inclined faces 29 of the lugs 28. When the. valve core is in its middle position, that is neither fully closed nor fully open, these lugs 31 are disposed between the lugs 28, but when the valve core is turned to fully close theports 13'orful1y open these ports, the beveled faces of the lugs 32 will engage the .reversely beveled faces of The action on these bevel faced-lugs 28 and 31 is to exert a clownward pull upon the cap 30 when the valve core has been turned to either a fully opened or fully closed position and the cap 30, bearing against the shoulders 18, forces-the valve core 15 downward as-much as is permitted by the taper of the seat, thus relaxing the tension on the spring 22 andat the same time stopping the further movement of the valve and further locking'the valve in its turned rotated position and holding the valve core rigidly against knocks or jars.

It will be seen from Fig. .1 that the valve core is so formed that .it;has a certain valve is connected in front of the valve.

amount. of draw at the lower end, that is that it may move downward a certain amount, as for instance g1, while the cap 30 is also so made as to allow the core to move downward s" and still remain tight against the sloping. lugs 31. Obviously, therefore, the more the valve wears, the tighter it locks when on or off, and obviously theopening '16 hassufiicient length as to permit this movement of the valve for wear. Vhen this valve is turned half way'oif or half way on, the cap 30 is loose, but when it is turned all the way'off or allthe way on, the cap 7 locks against the lugs 31 and is rigid.

I have illustrated my improvement as applied to a waste cock, that is the valve body 10 is formed with an'aperture 33 which, when the valve is turned fully off, communicates with a port 341 in the valve core. This aperture 33 may be closed by a plug under normal circumstances, and this plug 7 opened to drain the pipe line. to which tlie t will be understood, of course, that the aperture 34 extends to the hollow interior of the valve core. It is, therefore, obvious that my improvement is applicable to stop and waste cocks or to stop cocks not provided with the drainage opening disclosed.

In actual use, a cock constructed in ac cordance with my invention has been found to wear about in something over. a year, but due to the provision of the lugs above described and the spring, there was no seeping or leakage during this period. The average cook or valve of this type without my improvements thereon lasts about twelve weeks in constant use and then will start to seeping or leaking.

While I have shown this device as particularly applied to a stop and waste cock, it will be understood that it may be also appliedto rotary valves not of this exact class.

I claim I 1. A valve of the character described comprising a valve casing having a tapering valve seat, a tapering valve core fitting said end of the core and urging the valve core downward in the seat, the upper end of the valve casing being formed with an upwardly projecting lug having an undercut beveled end face, and a cap engaging'over the valve more and rotating therewith, the valve core being provided with ashoulder upon which the cap rests, said cap inclosing the lugs on the valve casing and being provided with an inwardly projecting lug having one end beveled to engage with and wedge beneath the undercut beveled face of the lug on the valve casing whereby to urge the valve core downward in the'valve casing when the valve is turned to one position and the lugs engaged.

A valve of thecharacter described com-- being provided with a shoulder upon which the cap rests, said cap on its inner face being provided with diametrically disposed, downwardly projecting lugs, the end edges of which aretbeveled'to have wedging engagement with the beveled facesof the lugson the valve casing to thereby urge the valve core downward when it is turned to either its fully open or fully closed position.

3. A valve of the character described comprising .a' valve bodyhaving diametrically disposed ports and a tapering valve seat, a tapering rotatable valve disposed in the valve seat, a spring operatively engaging the lower end of the valve and urging it downward against the valve seat, the upper end of the valve being formed with a manysided, upwardly projecting portionand with shoulders at the junction of this many-sided portion with the valve core, the upper end of the valve casing being provided withdiametrically disposed, upwardly projecting lugs, the opposite faces of each lug being undercut and beveled, a cap having, a manysided opening fitting oven'and' having en'- gagement with the many-sideduportion of the valve core, the inside of the cap being formed with diametrically disposed projections adapted to have wedging engagement with the undercut beveled faces of the lugs when the valve is fully turned in one direction or the other, and a screw entering the many-sided portion of the valve core and holding the cap against upward movement.

4;. In a valve, a valve casing having a tapering valve seat, thelower portion of said valve seat being diametrically enlarged to form a chamber, a tapering valve resting on the valve seat, the lower end of the valve core being reduced and extending to said chamber, the extremity of the valve core being screw-threaded, a washer disposed within the chamber and surrounding, the reduced stem of the valve, a coiled spring disposed against the washer and within said chamber, a cap fitting loosely within the chamber and against which the coiled spring bears, and a nut on the screw-threaded portion of the stem engaging said cap.

5. A valve of the character described comprising a valve casing having a tapering seat and diametrically disposed ports, the lower end of the valve casing being interiorly enlarged to form a chamber, the upper end of the valve casing being formed with diametrically disposed, upwardly projecting lugs,'the opposite end facesoi the lugs being undercut and beveled, a tapering valve core disposed within the valve seat and having a diametrically extending port longer than the ports in the valve casing, said valve said chamber and surrounding the stem, a,

cap disposed within the lower end of the chamber and bearing against the stem, a nut on the screw-threaded end of the stem and bearing against the cap, the valve core being provided at its upper end with a many-sided, upwardly projecting portion, a cap having a many-sided aperture engaging the many-sided portion or the valve core and extending downward over the upper end of the valve casing, the inner face of the cap being provided with diametrically disposed lugs formed with beveled end faces adapted to have wed 'ing engagement withthe lugs on the valve casing,-the core being formed with a portion upon which the cap rests whereby a downward movement of the cap due to a wedging engagement of its lugs'with the lugs on the casingwill urge the valve core downward, detachable means for preventing the upward movement of the cap relative to the valve core, and ahandle on the valve core.

. 6; In a valve of the character described, a valve casing having a tapered seat, the small end of the valve casing being interiorly enlarged to form a chamber, a tapered valve inserted in the valve casing and resting against said seat and having a stem extending therefrom through said chamber, the stem being flat on one side, a washer disposed within said chamber and fitting the flattened portion of the stem, a spring disposed within the chamber and bearing against the washer, a cap fitting within the chamber and bearing against the spring, the cap having an aperture flattened on one side to engage the flattened face of the stem,

and a nut on the lower end of the stem hearing against said cap.

7. In valve of the character described, a valve casing, a valve therein formed at its extremity with a reduced stem, the lower end of the valve casing formed to provide a chamber surrounding the stem, a washer disposed within said chamber, a spring disposed within the chamber and surrounding the stem, a cap surrounding the stem and it- I coacting ,means mounted on the valve cas ing and on the valve core acting when the valve is turned in one'direction to its fully off position or in the opposite'direction to its fully on position to wedge the valve downward against the seat.

9. A valve of the character described comprising a valve casing having a tapering valve seat, a tapering valve core fitting said seat, a spring operatively engaging the valve core and urging the valve downward against its seat, and coactingmembers mountedon the valve core and on the casing respectively, said members having inclined 'faces adapted to abut against each other when the valve is turned fully ofli or fully on and to wedge the valve'downward against this seat.

10. A valve of the character described com risin 'a valve casin havin a ta er' the character described comprising a valve casing having a tapering valve seat, a rotatable valve core fitting said seat,.a spring operatively engaglng the core and urging the core downward against the seat, the valve casing and core being formed; one with a lug having an-undercut beveled face and the other with a lug engageable against said beveled face when the valve is turned to a predetermined position, said engagementcausing the valve core to'move against its seat. V

12A valve of the character described comprising a valve casing having a tapering valve seat, a tapering valve core fitting said seat, a spring operatively engaging the core and'urg'ing the valve core toward its seat, the valve casingiand core being formed,

one with a pair of undercut beveledlugs and the other with members adapted to engage the beveled faces of said lugs when the valve is turned either to its fully on "oriits fully off positions to thereby cause the valve to be forced downward against its seat.

13,. A valve of the character described comprising a valve casing having a tapering valve seat, a tapering valve core fitting said seat, a spring operatlvelyc-engaging the core and urging the valve core 7 against the seat, the upper end of the valve casing being formed with an upwardly projecting lug having an undercut beveled end face, the valve'core being provided with a downwardly projecting lug havin'ga beveled undercut end to engage with and wedge beneath the undercut beveled face of thelug on the valve casing whereby to urge the valve core downward in the valve easing when the valve is turned to one position and the lug is'engaged. v

In testimonyv 'hereof I hereunto affi'x my signature. a

JOHN. GRANVILLE KING 

